Lister-plow



w. s. GRAHAM.

LISTER PLOW. APPLICATION FILED AUG.14, 1918- 2 SHEETSSHEET j/V EVTOR 1x Patented Nov. 16, 1920.

w. s. GRAHAM. LISTER PLOW. APPLICATION FILED AUG-14, IBIS 1,359,055. Patented Nov- '16, 1920.

2 SHEETS-SHEET 2- UNITED STATES PATENT OFFICE.

WILLIAM S. GRAHAM, OF CANTON, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO INTERNATIONALIIARVESTER COMPANY, A CORPORATION OF NEW JERSEY.

LISTER-PLOW.

Application filed August 14, 1918.

To all whom it may concern:

Be it known that I, VVILLIAM S. GRAHAM, a citizen of the United States, and a resident of Canton, in the county of Fulton and State of Illinois, have invented certain new and useful Improvements in Lister-Flows, of which the following is a specification, reference being had to the accompanying drawings.

T his invention relates to improvements in lister plows and has for its object to provide means capable of being readily applied to an ordinary plow of that character to render the plow more adaptable for performing the operation known as double listing by which is meant .the bursting out of previously-formed ridges between successive furrows that are spaced the usual distance apart, and forming in place of such ridges additional furrows or trenches for the reception of additional rows of seed. The advantages of double listing are quite fully set forth in Letters Patent No.

, 1,271,031, granted July 2, 1918, upon my application, and therefore need not be here repeated. In the construction shown and described in said Letters Patent a guide-runner is adjustably mounted at each side of the machine in position to run in a previously-formed furrow, the attachment of the runner being to an axle member of the machine. While such construction is a simple and effective one, I have found that by making the attachment of the guiderunners direct to the plow-beam certain advantages are attained, and my present invention has to do with improvements that render suchmethod of attachment capable of being easily made at any time. Briefly stated, the advantages derived from attaching these guide-runners to the plowbeam instead of to the frame of the machine are that they will at all times maintain the same position relative to the beam regardless of the depth of plowing, and by assuming the same angle at various depths they can be made to stand in a better position for clearing trash. Furthermore, when connected to the plow-beam the runners can be made somewhat shorter. thusmaking them stiffer as well as effecting economy on account of usless material. I accomplish the object of this invention by the means shown in the drawings and hereinafter described, and that Specification of Letters Patent.

Patented Nov. 16, 1920.

Serial No. 249,844.

which I believe to be new will be set forth in the claims.

In the drawings Figure 1 is a side elevation of a listerplow with my improvements applied thereig. 2 is a plan view of the plow-beam and the plow-bottom carried thereby, showing also my improved means connected with such beam; and

Fig. 3 is an enlarged detail, being a con tral vertical section through one of the brackets employed for securing a guide-runner in place, the runner being shown in side elevation.

Referring to the several figures of the drawings: 5 indicates the main frame of a lister planter supported at its front end by a pair of wheels, one of which is shown in Fig. 1 and indicated by 6, and at its rear end by a pair of caster wheels, the one shown in Fig. 1 being indicated by 7. 8 indicates a plow-beam suitably connected to a rock-shaft 9 in the form of a bail that has its horizontal end portions journaled in the side bars of the frame 5. 8 indicates the plow-bottom secured to the said beam. 10 indicates a hand lever, through the operation of which the bail or rock-shaft 9 can be moved to raise and lower the plow-beam as desired, a latch on the lever engaging a suitable segmental rack 11, as usual. Further details of the various parts of the machine are not here described as they form no part of my present invention, but reference is made to Letters Patent, No. 1,249,067, dated December i, 1917, granted on my application, wherein will be found a more full illustration and description of the various parts of the machine here illustrated. My said Letters Patent No. 1,271,031 may also be r ferred to for such further details.

Referring now to the parts with which my invention is more particularly concerned, 12 indicates a cross bar suitably clamped at its central portlon to the pl0wand move along in previously-formed furrows, and as such furrows are not always made at the same distance apart, the cross bar is preferably long enough to permit such runners to be ad usted outward far enough to enter and properly engage the sides of furrows that are spaced the greatest distance apart. The connection of the guide-runners with the cross bar is effected by means of brackets adjustably mounted upon such cross bar, and such brackets are identical in construction. They are inclicated by the numeral 13. At the forward end of the bracket is an opening corresponding in shape to the shape of the cross bar 12. The bracket, by means of such opening, is placed upon the cross bar, and is secured many ad usted position thereon by means sofa set screw 14. Through the body of the bracket extends an opening 15 for the reception of the shank of a guide-runner. As shown in Fig. 3, the upper portion of this opening is enlargedforward of the normal position of the shank of the runner, and its lower portion 1s enlarged rearwardly of such normal position, which construction enablesthe runner to be swung rearwardly the pin or pivot 16 may pass. 17 indicates a rearwardly extending tubular extension of the bracket, in which is located a coiled spring 18 that bears at its forward end against the runner shank, and at its other end against a washer 19. 20 indicates a set screw screwed into the contracted rear end of the -tu-bular extension '17 and bearing against the washer 19. It is evidentthat by means of this set screw 20 the tension of the spring 18 may be regulated. 21 indi cates the guiderunner referred to. To

work to the best advantage, these runners should be so shaped and set as to avoid as much as possible all tendency to gouge into the ridges, and I, therefore, so construct them as to provide a very considerable beveling at that edge adjacent to the central ridge. Such beveling is indicated inFig. 2, and more clearly shown in Fig. 8, in which Fig. 3 the runner illustrated is one to be employed at the right hand side of the machine. Furthermore, it is found that the runners are most effective when slightly inolined so as to throw-their rear ends slightly toward each other, as shown in Fig. 2. So inclining the runners causes their rear ends to do most of the bearing against the sides ofthe ridge, and does away with the possibility of the forward curved portions gouging into the ridges.

The provision of the coiled spring 18 insures a certain amount of yielding of the runners that is very desirable, as such method of mounting them enables them to spring up sufficiently when putting the plow bottom into the ground so that they will not interfere with such operation. In operation, each guide-runner will be continually under the influence of the spring 1-8, which spring, of course, tends to hold it in the forward position shown in Fig. 8, but'during the plowing operation each runner will be able to turn on its pivot as re ouired without affecting the other-runner or the plow bottom 8.

hat I claim as my invention and desire to secure by Letters Patent, is 1+- 1. In a lister-plow, the combination with a wheeled frame, a plow-beam and insans forraising and lowering said beam, of a bar connectedwith and extending laterally from said beam, a bracketadjustably mounted on said bar and having an opening therethrough, a gu ding-device having ts upper end portion pivotally secured in such opening, the upper portion of said opening being enlarged in advanceof the pivotal point of the guiding device and its lower portion enlargedin rear of such pivotal point, and yielding means connected with said bracket for holding said vguiding device inoperative position. 7

3. In a lister-plow, the combination with a wheeled frame, a plow-beam and means for raising and lowering said beam, of a bar connected withand extending laterally from said beam, a bracket mounted on said bar, said bracket comprising a body portion having an opening therethrough' and a hollow member projecting from said body portion,a guiding device projecting into'said opening and pivotally connected to the "bracket, and a spring .in said hollow member for holding said tion.

4. In a lister-plow, the combination with a wheeled frame, a plow-beam and means r ingaa low n sa d be o a a co nec ed w t and ex d g atera from both sides of said beam,a,guiding device at each end portion of said bar, each of said devices being positioned to travel in a previously-formed furrow while the plowbody is making an intermediate furrow, and means for connecting said guiding devices guiding device in posiwith said bar to allow each guiding device a to move independently of the other and independently of the plow-beam.

5. In a lister-plow, the combination with a wheeled frame, a plow-beam and means for raising and lowering said beam, of a bar connected with and extending laterally from both sides of said beam, a pivoted guiding device at each end portion of said bar, each of said devices being positioned to travel in a previously-formed furrow while the plow-body is making an intermediate r furrow, said guiding devices being movable on their respective pivots independently of each other and independently of the plowbeam, and yielding means for holding the guiding devices in operative position.

-(3. In a lister-plow, the combination with a wheeled frame, a plow-beam and means for raising and lowering said beam, of a bar connected with and extending laterally from. both sides of said beam, a guiding device connected to and extending rearwardly from each end portion of said bar, said guiding devices inclining toward each other, and each positioned to travel in a previouslyformed furrow while the plow-body is making an intermediate furrow.

7. In a lister-plow, the combination with a wheeled frame, a plow-beam and means for raising and lowering said beam, of a bar connected with and extending laterally from both sides of said beam, a guiding device connected to and extending rearwardly from each end portion of said bar, said guiding devices being inclined to cause their rear ends to lie nearer each other than their front ends and the inner faces of said devices being beveled along their lower edges.

8. In a lister-plow, the combination with a wheeled frame, a plow-beam and means for raising and lowering said beam, of a bar connected with and extending laterally from both sides of said beam, a guiding device connected to each end portion of said bar, and yielding means for holding the guiding devices in operative position, said devices being each positioned to travel ina previously-formed furrow while the plow-body is making an intermediate furrow.

9. In a lister-plow, the combination with a wheeled frame, a plow-beam and means for raising and lowering said beam, of a bar connected with and extending laterally from both sides of said beam, a guiding device movably connected with each end portion of the bar, and separate yielding means for each guiding device for independently holding said devices in operative position, said devices being each positioned to travel in a previously-formed furrow while the plowbody is making an intermediate furrow.

WILLIAM S. GRAHAM. 

